Diverticulitis is the acute inflammation of the diverticulum or saclike protrusion from the wall of the intestines caused by injury and bacterial proliferation. 
Abdominal pain is usually localized to the left lower quadrant, is abrupt, steady, severe and worsens over time.
Other signs and symptoms are fever, anorexia, nausea, vomiting, and altered bowel movements especially constipation but may also present with diarrhea or tenesmus.

Differential Diagnosis

  • Alternative diagnoses include acute appendicitis; colon cancer; complicated ulcer; Crohn’s disease; ischemic colitis; pseudomembranous colitis; ectopic pregnancy; ovarian cyst, abscess, or torsion
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